         PGPObjectFactory.
         .nextObject
         .getPublicKeys
-        .next)
+        iterator-seq)
     (catch NullPointerException e)))
 
 (defn file-for [group artifact version extension]

    (conj blockers (str "Missing " (name field)))))

(defn signed-with? [file sig-file keys]
  (some #(verify sig-file file (parse-key %)) keys))

(defn signed? [blockers file keys]
  (let [sig-file (str file ".asc")]

                       .toByteArray)))
        .verify)))

(defn parse-keys [s]
  (try
    (-> s
        .getBytes
